Water-soluble acid azo dyestuff containing a N-(p-sulphophenoxya

Details Water-soluble acid azo dyestuff containing a N-(p-sulphophenoxya Water-soluble acid azo dyestuff containing a N-(p-sulphophenoxya

1975-03-24

1977-05-10

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260157, 260509, 2605705R, C09B 2908, C09B 3104, D06P 108, D06P 324

Patent

active

040227626

ABSTRACT:
##STR1## wherein A is 2-thiazolyl, 4-nitro-2-thiazolyl, 2-benzothiazolyl, 6-methoxy-2-benzothiazolyl, 6-ethoxy-2-benzothiazolyl, 6-chloro-2-benzothiazolyl, 5,6-dichloro-2-benzothiazolyl, 4-bromo-6-chloro-2-benzothiazolyl, 4,6-dibromo-2-benzothiazolyl, 4-bromo-6-methoxy-2-benzothiazolyl, 4-bromo-6-ethoxy-2-benzothiazolyl, 4-bromo-5,6-dichloro-2-benzothiazolyl, 6-methylsulfonyl-2-benzothiazolyl, 4-bromo-6-methylsulfonyl-2-benzothiazolyl, or 6-hydroxyethylsulfonyl-2-benzothiazolyl, X is hydrogen, chlorine, methyl or trifluoromethyl, R is alkyl containing 1 to 4 carbon atoms, U is alkylene containing 1 to 5 carbon atoms, and y is hydrogen, chlorine or methyl. The dyestuffs are useful for the dyeing and printing of polyamide fibers for which they have a good affinity for polyamides so that the tinctorial yield is excellent and the exhaustion of the dyestuffs is very good. The colorations obtained have a remarkable brilliance, good fastness to washing and to light and finally good covering of bars i.e. absence of streakiness.

REFERENCES:
patent: 2603656 (1952-07-01), Martin
patent: 2603657 (1952-07-01), Vinton
patent: 3478011 (1969-11-01), Artz
patent: 3579497 (1971-05-01), Ramanathan et al.
patent: 3709872 (1973-01-01), Koller
patent: 3840517 (1974-10-01), Weaver et al.
Venkataraman, "The Chemistry of Synthetic Dyes", vol. I, p. 270 (1952).

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